/Engine/Source/Editor/SequencerCore/Public/MVVM/Views/SOutlinerView.h
Gather the children from the specified node
void OnGetChildren ( [TWeakViewModelPtr](API\Editor\SequencerCore\TWeakViewModelPtr)< [IOutlinerExtension](API\Editor\SequencerCore\MVVM\Extensions\IOutlinerExtension) > InParent, [TArray](API\Runtime\Core\Containers\TArray)< [TWeakViewModelPtr](API\Editor\SequencerCore\TWeakViewModelPtr)< [IOutlinerExtension](API\Editor\SequencerCore\MVVM\Extensions\IOutlinerExtension) >> & OutChildren ) const